Traction and antiskidding device for automobiles.



3. RUSS,

E'RAG'HON AND ANTISKIDDING DEVlCE FOR Amomasms.

APPLICATIOM HLED MAR.6.1912,

1 9 1%,, 2%,{21 i iatented May 4, 191,5.

UNITED STATES PATENT oEEIoE.

JOHN ROSS, OF PHILADELPHIA, PENNSYLVANIA.

TRACTION AND ANTISKIDDING DEVICE FOR AU'. lO1V[OB]ZLES.

Specification of Letters latent.

Patented Mayet, 1915.

Application filed March 6, 1912. Serial No. 681,885.

To all whom it may concern: Be it known that 1,'JoiiN Boss, a citizen of the United States, and resident of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented an Improveviiient in Traction and Antiskidding Devices for Automobiles, of which the following is a specification.

invention has reference to traction and anti-skidding devices for automobiles and consists of certain improvements which are fully set forth in the following specification and shown in the accompanying 'di'awings which form a part thereof.- 15

ments more fully set out hereinafter tak'eii in connection with the drawings and are more specifically defined in the claims.

Referring to the drawings: Figure 1 isa side elevation of a portion of a wheel and.

- the with lily-invention applied thereto: Fig. 2 .s a cross section of the same; and Fig. 3

flanged ring pieces 5, the samebeing de tachably clamped in'position upon the is a perspective view of one of the traction shoes removed.

Referring to Figs.'1, 2 and 3, the wheel spokes 2 are provided with the usualfelly 3 and a rubber tire 4 of any suitable type. It is shown as having solid tire of rubber but a pneumatic or other tire may be substituted therefor.

Detachably clamped to the sides of the spokes 2 and concentric with the :felly are the flanged ring pieces 7, the clamping means being the bolts 8 which are shown on each sideof the spokes. Also secured to the sides of the felly and concentric with the flanged ring pieces 7 are the corresponding felly by bolts 6. Thering' pieces '5'and-7 are provided with apertures in radial al inement in which are arranged the radial rods 9, the outerfends of which are flanged into heads to which are detachably secured thetraction and anti-skidding shoes 11, shown more fully in Fig. 3. The inner ends of the rods 9 are provided with sleeves 12 guided in the flanged ring pieces 7, said sleeves each having a flange orhead 13 through which a set screw 1% extends to clamp the sleeve upon the rod. Coil springs 15 surround the sle'evesand press at one end upon the heads 13, and at the other end against the flanged ring pieces 7. Nuts 16 are screwed upon tr. screw threaded end 17 of the rods 9 to limit the outward movement of the said rods i and shoes 11 carried thereby, and yet at all times to permit the inward movement there- 'of against the action of the springs 15. Normally, the rods 9 are so adjusted as to cause the shoes 11 to be located slightly below the bottom-of the tire i so as to positively be brought into firm contact with the ground in running over the same. The springs 15 are compressed under the weight of theload on the wheels so that the main load is carried by the tire =l but assisted by the pressure of the shoes 11 it upon the ground.v

In practice,-there maybe as many ofthe radial rods 9 and shoes as the duty imposed upon the automobile may require, and this would vary also with the diameters of the wheels. I have shown and prefer to arrangethe rods and their shoes upon each side of the felly and tire, as shown in F 1g. 2,

but I do not restrict myself in this respect.

- also prefer to have the flanged ring pieces 5 and 7 removable so that theymay be taken off in the summer time, but this 15 not esiieede-d under special conditions, as where,

for instance, steep grades must be,'climbed.

by the automobile with heavyloads.

Ihave shown my invention in variousforms of adaptation for use, but for heavy duty I prefer the construction shown in Figs. 1, Z and 3,.but in all of the constructions, the traction and anti-skidding shoeshaving the ribs 18 at right aiigle's are employed', and in all cases these shoes are appliedin such a way'as to normally extend .90 I sential, as the increased traction may be beyond'the plane of tire surface and to be combinedwith means to limit their outward movement while permitting inward movement to compensate for the compress on of the tire. I do notrestrict myself to the de- "tails as these may be modified within the scope of-the claims without departing from thespirit of the inv Qn- In a traction and anti-skidding attach ment for wheels, the combination of a wheel having a tread portion, with two "laterally projecting continuous annular guides respectively secured to thefelly and spokes to provide flanges, the guide secured to the spokes having the wider flange, a plurality of rods guided in said flanges and relatively held in position and against rotation therein said rods provided on their outer ends with means for increasing traction and preventing skidding and at their inner ends with screw, threaded portions, sleeves having collars secured to the rods and guided in the flanges attached to the spokes and surrounding the screw-threaded ends, springs pressing upon the collars of the sleeves for pressing the rods outwardly and arranged between theguides, and nuts screwed upon the threaded 'ends of the rods coacting with the sleeves; and guides for limiting the outward movement of the rods while permitting the inward movement thereof together With the sleeves.

In testimony of which invention I hereunto set my hand. 1

JOHN ROSS.

vWitnesses: 4

R. M. KELLY, E; W. SMITH. 

